20029142 has 40 divisors (see below), whose sum is σ = 36233736. Its totient is φ = 8297856.

The previous prime is 20029133. The next prime is 20029147. The reversal of 20029142 is 24192002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20029147) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 206438 + ... + 206534.

Almost surely, 2^20029142 is an apocalyptic number.

20029142 is a deficient number, since it is larger than the sum of its proper divisors (16204594).

20029142 is an frugal number, since it uses more digits than its factorization.

20029142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20029142 is about 4475.3929436419. The cubic root of 20029142 is about 271.5735369406.

The spelling of 20029142 in words is "twenty million, twenty-nine thousand, one hundred forty-two".